- A
Create an AWS WAF web ACL and attach it to the Lambda function
Why wrong: WAF does not attach to Lambda functions directly.
- B
Configure API Gateway to require an API key and associate WAF with the usage plan
Why wrong: WAF does not integrate with API keys.
- C
Associate an AWS WAF web ACL with the API Gateway HTTP API
WAF can be associated with HTTP APIs.
- D
Associate an AWS WAF web ACL with the API Gateway REST API stage
WAF can be associated with API Gateway REST API stages.
- E
Place AWS WAF in front of Amazon CloudFront and use CloudFront as the API Gateway endpoint
Why wrong: CloudFront is optional, not required for WAF integration.
Question 633 of 1,746
SAP-C02 Design for New Solutions Practice Question
This SAP-C02 practice question tests your understanding of design for new solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company is designing a serverless application that uses Amazon API Gateway and AWS Lambda. The API must be secured using AWS WAF. Which TWO actions should the company take to integrate WAF with API Gateway? (Choose TWO.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Associate an AWS WAF web ACL with the API Gateway HTTP API
Option C is correct because AWS WAF can be directly associated with an API Gateway HTTP API to filter and monitor HTTP requests based on rules in a web ACL. Option D is correct because AWS WAF can also be directly associated with a specific stage of an API Gateway REST API, providing granular security at the API stage level.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Create an AWS WAF web ACL and attach it to the Lambda function
Why it's wrong here
WAF does not attach to Lambda functions directly.
- ✗
Configure API Gateway to require an API key and associate WAF with the usage plan
Why it's wrong here
WAF does not integrate with API keys.
- ✓
Associate an AWS WAF web ACL with the API Gateway HTTP API
Why this is correct
WAF can be associated with HTTP APIs.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Associate an AWS WAF web ACL with the API Gateway REST API stage
- ✗
Place AWS WAF in front of Amazon CloudFront and use CloudFront as the API Gateway endpoint
Why it's wrong here
CloudFront is optional, not required for WAF integration.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think WAF must be attached to a CloudFront distribution or a Lambda function, but AWS WAF directly supports association with both API Gateway REST API stages and HTTP APIs without requiring CloudFront.
Detailed technical explanation
How to think about this question
When you associate a WAF web ACL with an API Gateway REST API stage, the web ACL is applied to all requests to that stage before they reach the API Gateway. For HTTP APIs, the web ACL is associated at the API level, not the stage level, because HTTP APIs do not have stages in the same way as REST APIs. Under the hood, AWS WAF evaluates incoming HTTP(S) requests against the rules in the web ACL and either allows, blocks, or counts them before they are forwarded to the API Gateway endpoint.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Visual reference
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Design for New Solutions — study guide chapter
Learn the concepts, then practise the questions
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FAQ
Questions learners often ask
What does this SAP-C02 question test?
Design for New Solutions — This question tests Design for New Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Associate an AWS WAF web ACL with the API Gateway HTTP API — Option C is correct because AWS WAF can be directly associated with an API Gateway HTTP API to filter and monitor HTTP requests based on rules in a web ACL. Option D is correct because AWS WAF can also be directly associated with a specific stage of an API Gateway REST API, providing granular security at the API stage level.
What should I do if I get this SAP-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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